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Siemens BQ3B100H Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Siemens
BQ3B100H
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ3B100H
Quantity
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Siemens BQ3B100H - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Siemens BQ3B100H - 100A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ3B100H |
| Series | BQ |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG (Cu), 2 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Sold out
Quantity
Siemens BQ3B100H - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ3B100H-R |
| Series | BQ |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG (Cu), 2 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
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Description
Part of the BQ series, this 100A three-pole molded case circuit breaker provides reliable thermal-magnetic protection for commercial and industrial electrical systems. Designed for secure bolt-on installation, it mounts into compatible Siemens panelboards to distribute power safely. Featuring a high interrupting capacity of 22kA at 240VAC, this HACR-rated unit is ideal for heating, ventilation, and air conditioning equipment circuits requiring robust fault clearing capabilities.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ3B100H-R |
| Series | BQ |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG (Cu), 2 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhat is the difference between the Siemens BQ3B100 and the BQ3B100H?
The H in the BQ3B100H catalog number indicates a high interrupting rating. The BQ3B100H provides 22kAIC at 240VAC, while the standard BQ3B100 is rated for 10kAIC. Both are 100A, 3-pole bolt-on breakers with identical physical dimensions.
Is the Siemens BQ3B100H HACR rated?
Yes, this breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment that requires circuit protection for motor group applications.
Can the BQ3B100H be used in a 480V panelboard?
No, the BQ3B100H is strictly rated for a maximum of 240VAC. For 480Y/277V or 480V systems, you must specify a different breaker family, such as the Siemens BQD series.
Does the BQ3B100H come with load lugs installed?
Yes, the breaker includes factory installed load side lugs. These terminals are rated for both copper and aluminum conductors.
Which panelboards accept the BQ3B100H breaker?
The BQ3B100H is a bolt-on molded case circuit breaker designed exclusively for compatible Siemens commercial panelboards. It bolts directly to the panelboard bus and cannot be used in standard residential plug-on load centers.
Can I mount the BQ3B100H on a standard DIN rail?
No, this is a bolt-on panelboard breaker. It does not have standard DIN rail mounting clips. It must be bolted directly to the busbars of a compatible Siemens panelboard.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 73 reviews.
Reviews Summary
Generated by AI from 67 most recent customer reviews
Last updated 6/3/26
Customers say these breakers arrive quickly and fit perfectly for their electrical needs. Fast shipping and competitive pricing are frequently mentioned, with many users appreciating the availability of hard-to-find and older-style breakers. The products are well-packaged and arrive in good condition. Most customers report successful installations and reliable performance. A few note missing items from orders or concerns about product condition, though the majority express satisfaction with their purchases and indicate they would order again.
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Rating
73 reviews
- HSHector S.Verified BuyerReviewingSiemens BQ3B100H - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/27/26Perfect replacement
Fit perfectly and good price
- AFAnthony F.Verified BuyerReviewingSiemens BQ2B020 - 20A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/25/26works as expected
works as expected
- MSMike S.Verified BuyerReviewingEaton / Cutler-Hammer BQ250250 - 50/50A Quadplex Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/26Electrical company
Breaker worked awesome thank you very much
- PEPhilip E.Verified BuyerReviewingSiemens BQ3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/10/26Siemens BQ3B020
The breaker arrived as described and on time. It works as expected. I will order from SuperBreakers again in the future without hesitation.
- PLPaul L.Verified BuyerReviewingSiemens BQ1B020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/23/26Breaker
Quick shipping. Exact fit.